Down-draft kiln



Oct. 29, 1929.

M. JONES 1,733,488

DOWN DRAFT KILN Filed July 21, 1927 3 Sheets-Sheet l attoznc {SJ 6 Oct.29, l 929.

JONES DOWN DRAFT KILN Filed July 21, 1927 3 Sheets-Sheet 2 I Oct. 29,1929. JONES 1,733,488

DOWN DRAFT KILN Filed July 21, 1927 3 Sheets-Sheet 3 wuentoa Momma clam7 1 i I attoznoq Patented Oct. 29, 1929 UNITED STATES MORTIMER JONES, orroad: WORTH, "'rnxas DOWN-DRAFT Knit Application filed July 21,

By invention relates to kilns and more particularly to brick kilns andkilns for burning any kind of earthen products; and the objects are toprovide means for proper distribution of the heat for completedehydration in one continuous performance or operation. Another objectis to provide means for applying the heat direct to the dome of the kilnand forcing the heat down through the wares,

eliminating the necessity of flash walls in the kilns. The advantage ofthis construction is that there is direct application of heat,eliminating the loss by radiation. In this construction there is no lossof heat because the heat is conserved by means of the dual fire chamber.With this construction, the heat may be transferred from one kiln toanother.

Other objects and advantages will be fully explained in the followingdescription and the invention will be more particularly pointed out inthe claims.

Reference is had to the accompanying drawings which form a part of thisapplication.

Fig. 1 is a perspective view of the kiln.

Fig. 2 is a vertical transverse section of the same.

Fig. 3 is a broken sectional view, showing tunnels and floor openings-Fig. 4 is a broken plan view of a kiln showing one unit with a crownopening.

Fig. 5 is a side elevation of a portion of a kiln, showing the openingsto the fire tunnels.

Fig. 6 is a perspective of a broken kiln, illustrating the openings intothe fire tunnels.

and also the floor openings.

Similar characters of reference are used to indicate the same partsthroughout the several views.

The kiln has a wall 1 of known type which can be several hundred feetlong. Any number of flues 2 may be equally distributed along the sidesof the kiln for burning the wares after dehydration and the cooperatingflues 3 lead into the tunnels 4 and 5 for distributing the heatthroughout the kiln. The walls 1 are provided with re-inforcements 6which are extended upwardly for deflecting the heat towards the dome.The re-inforcing 6 is spaced from the ports 7 so that the heat from1927. Serial No. 207,507.

the fire boxes 2 will not be impeded. The flues2 are set at an anglesothat the heat will be directed upwardly @without hindrance. ForWater-smoking and drying the heat is directed through the fines 3 andthrough the ports 8 into the tunnels 4 and 5 which are ordinary drafttunnels. While heat is being directed through the tunnels 4 and 5 byflues 3, the fiues 2 are closed by sliding valves 9. When thedehydration or drying is approximately complete, the valves 9 are openedso that the heat will go up the passages 18 and upwardly through theflues 2. The heat will go through the flues 2 for a period of time untilthe'kiln is heated through .and through. 05 Then close valves '9 andkeep them closed until soaking "period 'begins. Then open valves 9 andclose stack dampers. (The stacks 11 and dampers 10 therefor are ofknowntypeand need not be described.) The'lO heat will becirculatedthrough tunnels 4 and 5, flues 8 and flues 2 during thesoaking period. At the'endof the soaking period the heat will be.transferred to the adjacent kiln or to any other kiln by means ofunderground connecting tunnels. The undergroundtun- I nelsareof knowntype and not part of this invention. The usual ventilating dampers 10are opened during the dehydration period.

Thedome 13 is of ordinary type and] the floor 0 leis also of ordinarytype. The flues 2 and 3 are provided withantechambers 15in which gas orother burners maybe located. Ba fiies 16 are provided in the fire boxesto. direct the draft towardsthe tunnels 4; and 5 and for I preventingthe draft from interfering with the dampers9. In the water smokingperiod the draft'goes through ports 8 into the tun- I nels and onthrough the ports 8 through the floor.14:. 9G The tunnels 4t and 5 formpassage ways throughout the length of the kiln and by. means of thepassages 8 and 8 tend to equal ize the heat drafts or to make the draftsuniform. r

What I claim is,' i y 1. A kiln for burning and curing earthen productscomprising a structure provided with floor, walls, and dome of knowntype, and having underground tunnels, flues lead- .190

ing to said tunnels, said walls having a series of openings formingports, a series of inclined divergingflues positioned above saidunderground flues and communicating with 5 said ports for directing theheat to the dome of the kiln and down through the wares, and means fordirecting heat from said underground flues to said inclined flues. 2. ,Akiln for burning and curing. brick and other earthern products having afloor, walls, 1 and dome of known type, and having under ground tunnels,flues communicating with said underground tunnels and said tunnelshaving draft passages to the interior of said kiln, inclined divergingflues connected with said kiln for directing heat towards the dome ofthe kiln and downwardly through the wares, an inclined flue beingpositioned above anunderground flue and means for directing heat fromeach underground flue to the inclined flue immediately above thereof. g3. A kiln for burning and curing brick and other earthen products havinga floor, walls, and dome of known type, and having under ground tunnelshaving communication with said dome, a series of "under-ground fluescommunicating with said tunnels, a series of diverging inclined fluescommunicating with said dome, there being an inclined flue above eachunderground fire box, partitions separating the underground flues fromthe inclined flues and provided with passages therethrough; and dampersfor opening and closing said passages. 4. In a kiln for burning brickand other earthen products provided with a dome, walls, and floorunderground tunnels communicating with the interior of said kiln throughsaid floor, underground flues communicating with 40 said tunnels,inclined flues above said underground flues communicating with theinterior of said kiln for directing heat towards the dome of the kiln,partitions between the underground flues and the inclined flues providedwith passages therethrough, and means for directing heat: from I saidunderground flues to said inclined lines.

In testimony whereof, I set my hand, this 21st day of June, 1927;

' MORTIMER JONES.

